How to park "free" in Zurich or city areas.
1. Get a very dirty looking car / don't wash your car for 3 winter months at least
2. Remove all number plates or cover it up with hard mud
3. Jack up the car and remove one wheel (as if puncture)
4. Open the bonnet and place big jellycan of water on top of the engine
5. Put up the red triangle somewhere behind but near the car.
However do not park near "tow away" zones.
Good luck!
Second way: drive up to a nice expensive hotel with an equally expensive auto.
Use the valet parking / ask for parking in front of hotel.
Discreetly leave the hotel but leave the auto parked there.
Last and final way:
Watch Mr Bean with parking episode. Try to take new ticket from carpark entrance.!